AddEventHandler("sale", "OnOrderAdd", "OnOrderAddHandler");
CModule::IncludeModule("sale");
function OnOrderAddHandler(&$ID, &$arFields)
{
    $dbOrderProps = CSaleOrderPropsValue::GetList(
        array("SORT" => "ASC"),
        array("ORDER_ID" => $ID, "CODE"=>array("PHONE", "ADDRESS"))
    );
    if ($arOrderProps = $dbOrderProps->GetNext()):
        $user = new CUser;
        $user->Update($arFields['USER_ID'], Array("PERSONAL_PHONE"=> $arOrderProps['VALUE']));
    endif;
}